Home / 5,428.35-8,137.62-1,964.79

Finding the Fourth Proportional to 5,428.35, 8,137.62 and 1,964.79

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Solution

The fourth proportional to 5,428.35, 8,137.62 and 1,964.79 is: 2,945.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.35 : 8,137.62 = 1,964.79 : x
  2. Step 2: Convert to fraction form
    5,428.35/8,137.62 = 1,964.79/x
  3. Step 3: Cross multiply
    5,428.35x = 8,137.62 × 1,964.79
  4. Step 4: Simplify right side
    5,428.35x = 15,988,714.40
  5. Step 5: Solve for x
    x = 15,988,714.40/5,428.35
  6. Step 6: Final answer
    x = 2,945.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.